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<div>Sorry for my delay Iman,</div>
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<div>I have not had a chance to try to replicate the bug that you reported. In the mean time, something to try... I normally use one of the standard_1020 elc files that comes with eeglab. Make a copy of it and then edit it in a text editor so that it only contains
the desired channels. Then use interpmont create the data at the new sites.</div>
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<div>I hope that this helps<br>
<br>
<div>___</div>
<div>Sent from an auto-correcting touch screen device.</div>
<div>___</div>
<div>James </div>
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<div><br>
On Apr 14, 2014, at 4:08 PM, "Iman M.Rezazadeh" <<a href="mailto:irezazadeh@ucdavis.edu">irezazadeh@ucdavis.edu</a>> wrote:<br>
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<p class="MsoNormal"><span style="color:#1F497D">Hi James,<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Thanks for your email and the video.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">I have been trying to use the toolbox according to the YouTube video and change the head radius in EEGLAB to 85; but I have got a strange error ( see below) and I could not even see the head model and rotate
it! My goal is to change the current montage of the data from 128-channel EGI ( which apparently I have rejected some bad channels so I have less than 128 channels) to the standard 81 or 27 channel montage from BESA ( or whatever standard montage with less
channels , like 27) . I have attached the electrode location file that I have been trying to use. I have downloaded it from :
<a href="http://robertoostenveld.nl/?p=5">http://robertoostenveld.nl/?p=5</a><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Do you have any idea what is going wrong or the electrode location file is incorrect or what? Or do you have a 21/27 montage that works well for you and you can share it here.
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><image001.png></span><span style="color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Very best<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">Iman<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D">============================================<o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Arial Rounded MT Bold","sans-serif";color:#7030A0">Iman M.Rezazadeh, Ph.D. , M.Sc., B.Sc.<o:p></o:p></span></b></p>
<p class="MsoNormal"><span style="color:#1F497D">Research Associate II<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">UCLA David Geffen School of Medicine</span><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Semel Institute for Neuroscience and Human Behavior</span><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">760 Westwood Plaza, Ste 47-448</span><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Arial","sans-serif";color:#1F497D">Los Angeles, CA 90095</span><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:#1F497D"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:#1F497D"><o:p> </o:p></span></p>
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<div style="border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0in 0in 0in">
<p class="MsoNormal"><b>From:</b> James Desjardins [<a href="mailto:jdesjardins@brocku.ca">mailto:jdesjardins@brocku.ca</a>]
<br>
<b>Sent:</b> Thursday, April 10, 2014 7:46 AM<br>
<b>To:</b> Iman M.Rezazadeh; 'EEGLAB List'; <a href="mailto:mmiyakoshi@ucsd.edu">
mmiyakoshi@ucsd.edu</a>; 'Arnaud Delorme'<br>
<b>Subject:</b> RE: [Eeglablist] Converting EEG Montage to Standard Montage<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black">Hi Iman,
<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black">I have an EEGLAB extension "Interpmont" that may help. It can be downloaded from the public github repository
<a href="https://github.com/jadesjardins/interpmont">here.</a><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt;font-family:"Helvetica","sans-serif";color:#666666;background:white">"EEGLAB extension for interpolating recording locations. Utilities include changing current locations to fit a model surface (warplocs),
Interpolating current data to locations in a coordinate file (interpmont) and re-referencing to the average interpolated site from a coordinate file (interpref)."</span><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black">Once you have the extension folder extracted into the EEGLAB plugins folder use " Tools > Interpolate to coordinate file > interpolate the data to sites in a coordinate
file". In the GUI select an EEGLAB recognized coordinate file and then in the "Optional inputs" edit box enter <'manual','on'> (this will allow you to coregister your loaded data set chanlocs coordinates to the surface of the new coordinate file [if they are
not already on the same surface]).<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black">James Desjardins, MA<br>
Electrophysiology Technologist<br>
Cognitive and Affective Neuroscience Lab, Psychology Department <br>
Jack and Nora Walker Centre for Lifespan Development Research<br>
Brock University<br>
500 Glenridge Ave.<br>
St. Catharines, ON, Canada L2S 3A1<br>
905-688-5550 x4676<br>
--<br>
"'Cause you never can tell What goes on down below!<br>
"This pool might be bigger Than you or I know!"<br>
<br>
McElligot's Pool<br>
Dr.Seuss 1947<o:p></o:p></span></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:black">
<a href="mailto:eeglablist-bounces@sccn.ucsd.edu">eeglablist-bounces@sccn.ucsd.edu</a> [<a href="mailto:eeglablist-bounces@sccn.ucsd.edu">eeglablist-bounces@sccn.ucsd.edu</a>] on behalf of Iman M.Rezazadeh [<a href="mailto:irezazadeh@ucdavis.edu">irezazadeh@ucdavis.edu</a>]<br>
<b>Sent:</b> April-09-14 4:19 AM<br>
<b>To:</b> 'EEGLAB List'; <a href="mailto:mmiyakoshi@ucsd.edu">mmiyakoshi@ucsd.edu</a>; 'Arnaud Delorme'<br>
<b>Subject:</b> [Eeglablist] Converting EEG Montage to Standard Montage</span><span style="font-size:12.0pt;font-family:"Times New Roman","serif";color:black"><o:p></o:p></span></p>
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<p class="MsoNormal"><span style="color:black"> <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black">Hi EEGLABers, <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"> <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black">I want to transform my current electrodes’ montage (128ch – bad electrodes) for each individual subject to
</span><span style="color:#1F497D">a </span><span style="color:black">standard montages ( like 81 channels ) like
</span><span style="color:#1F497D">what </span><span style="color:black">I can do it in BESA to make all of
</span><span style="color:#1F497D">the electrode locations </span><span style="color:black">standardize</span><span style="color:#1F497D">d</span><span style="color:black"> for group comparison in ELECTRODE SPACE NOT SOURCE SPACE. Is there any function /plug-in
to do it?<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black">Best<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black">Iman<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"> <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"> <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black">============================================<o:p></o:p></span></p>
<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Arial Rounded MT Bold","sans-serif";color:#7030A0">Iman M.Rezazadeh, Ph.D , M.Sc., B.Sc.</span></b><span style="color:black"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black">Research Associate II<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black">Semel Institute for Neuroscience and Human Behavior
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black">University of California, Los Angeles (UCLA)<o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"> <o:p></o:p></span></p>
<p class="MsoNormal"><span style="color:black"> <o:p></o:p></span></p>
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<div><81ch_montage.sfp></div>
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